400 yuan is less than a month, but you have to use your brain to make a recipe, otherwise it won't be enough. Although you have little money, you must ensure nutrition and ensure that your body gets the necessary nutrition. Health is the most important thing. The most basic thing is to cook at home, buy food and cook by yourself, and the average day is about 13 yuan. Eat more in the morning, eat less at night, and ensure one a day. All kinds of meat are about 4 Liang, vegetables are mainly Chinese cabbage, radish, peas, carrots and tofu, one fruit a day, so money is not a problem, health is guaranteed and nutrition is comprehensive.